(iii) Exception. The neighborhood land rule shall not apply to any property after the expiration of 10 years from the date of acquisition. Further, the neighborhood land rule shall apply after the first 5 years of the 10-year period only if the organization establishes to the satisfaction of the Commissioner that future use of the acquired land in furtherance of the organization's exempt purpose before the expiration of the 10-year period is reasonably certain. In order to satisfy the Commissioner, the organization does not necessarily have to show binding contracts. However, it must at least have a definite plan detailing a specific improvement and a completion date, and some affirmative action toward the fulfillment of such a plan. This information shall be forwarded to the Commissioner of Internal Revenue, Washington, DC 20224, for a ruling at least 90 days before the end of the fifth year after acquisition of the land.